ATI TEAS 7
Anatomy
1. The free edges of your fingernails and toenails are technically called the:
- A. Lunula (The lunula is the white crescent moon shape at the base of the nail)
 - B. Matrix (The matrix is the area under the nail where new nail cells are produced)
 - C. Hyponychium (This is the skin under the free edge of the nail)
 - D. Free edge
 
Correct answer: D
Rationale: The free edges of your fingernails and toenails are the parts that extend beyond the fingertip or toe. These edges are commonly referred to simply as the "free edge" because they are not attached to the skin. The lunula is the white crescent moon shape at the base of the nail, the matrix is the area under the nail where new nail cells are produced, and the hyponychium is the skin under the free edge of the nail. Therefore, the correct answer is D.
2. Which verb tense is most appropriate for this sentence: "By next week, _____ finished the project."
- A. I will be finishing
 - B. I will have finished
 - C. I am finishing
 - D. I would finish
 
Correct answer: B
Rationale: Option B expresses a future event completed before another future point in time (next week).
3. A bar graph shows the number of patients admitted to the ER each day for a week. How do you determine the day with the highest number of admissions?
- A. Find the tallest bar in the graph.
 - B. Compare the heights of all bars.
 - C. Calculate the average number of admissions per day.
 - D. Subtract the lowest number of admissions from the highest.
 
Correct answer: A
Rationale: The best approach is to find the tallest bar
4. What is the main function of lysosomes?
- A. Breaking down and recycling cellular waste
 - B. Storing carbohydrates
 - C. Synthesizing lipids
 - D. Transcribing DNA into mRNA
 
Correct answer: A
Rationale: The main function of lysosomes is to break down and recycle cellular waste. Lysosomes contain digestive enzymes that help break down old or damaged organelles, foreign substances, and cellular debris. This process, known as autophagy, helps maintain cellular health and proper functioning. Storing carbohydrates (option B) is not a function of lysosomes; carbohydrates are typically stored in the form of glycogen in the cytoplasm or as starch in plant cells. Synthesizing lipids (option C) is primarily done by the endoplasmic reticulum and not by lysosomes. Transcribing DNA into mRNA (option D) is a function of the nucleus and not the lysosomes. Therefore, the correct answer is A: breaking down and recycling cellular waste.
5. The process of a gas changing directly into a solid is called:
- A. Condensation
 - B. Deposition
 - C. Sublimation
 - D. Evaporation
 
Correct answer: B
Rationale: This process, also known as sublimation, involves gas particles losing energy and transitioning directly into the solid state.
6. The scientist discovered a new species of butterfly in the rainforest. What is the past tense of the verb "discover"?
- A. discovers
 - B. discovered
 - C. discovering
 - D. discovery
 
Correct answer: B
Rationale: The past tense of a verb describes an action that happened in the past.
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